Collocating tool gauge



Feb. 28, 1928.

S. NEMETH COLLOCATING TOOL GAUGE Filed April 21, 1927 INVEN TOR. Sczrtcfla'meih Y W ATTORNEYJ Patented Feb. 28, 1928.

UNITED STATES STEVE NEMETH, OF SHEGON, WEST VIRGINIA.

GQLLoQATING TOOL GAUGE.

Application filed April 21, 1927. Serial No. 185,537.

This invention relates to improvements in collocating tool gauges, andhas more particular reference to an improved form of gauge particularlyserviceablein facilitating the setting of cutter bits relative to thecutter bit sockets of cutter chains commonly employed in coal cuttingand mining machinery, whereby the cutter bits will project a uniform andpredetermined desirable distance from thesockets.

It is well known that, in operation, the cutter bits of the cutterchains of coal cutting machinery are quickly worn, and it thereforebecomes necessary to frequently adjust the cutter bits relative to theirsockets in order to secure eflicient and uniform results.

While the primary object of the present invention is to provide animproved form of" gauge for facilitating adjustment ofcutter bits of theabove kind relative to their sockets, after becoming worn it isnevertheless contemplated to employ the present in-' vention in theinitial equipment of the cutter bit sockets of cutter chains with newerunused cutter bits. 7 a

A specific object is to provide a collocating cutter bit gauge of theabove kind which is extremely simple and durable in construction as wellas capable of use without the requirement of special skill, forpermitting ready and expeditious adjustment of the cutter bits in thedesired manner.

A more specific object is to provide a gauge of the above kind which maybe readily worn upon the hand for convenient use and in a manner topermit the other hand of the userto be free for effecting the adjustmentof the cutter bits.

Other objects will become apparent as the nature of the invention isbetter understood, and the same consists in the novel form, combinationand arrangement of parts hereinafter more fully described, shown in theaccompanying drawing and claimed.

In the drawing, wherein like reference characters indicate correspondingparts throughout the several views,

Figure 1 is a perspective view of a fragment of an endless coal cuttingchain, the bits of which are adapted to be adjusted by the use of thepresent invention;

Figure 2 is a plan view of one of the socket carrying links of the chainshown in Figure 1 and a gauge constructed. in accordance with thepresent invention operatively associated with the socket and the cutterbit carried thereby, for illustrating the manner of use of the gauge infacilitating adjustment of the cutter bit; 7 i

Figure 3 is a side view of the gauge shown in Figure 2 looking towardthe left of the latter figure; j 1

Figure 4 is a bottom plan view of the gauge as seen looking toward the,left of Figure 3; and j Figure 5 is a longitudinal section takensubstantially upon line 5- -5 of Figure 4.

Referring more in detail to the drawing, 5 indicates generally afragment of a conventional endless cutter chain commonly employed incoal, mining and cutting machinery, and as shown these chains arecomposed of a number of links, alternate ones of which are of specialform and embody integral laterallyprojecting cutter bit holders orsockets 6 within which the shanks of conventional cutter bits 7 arereleasably retained in desired adjusted position by means of set screws8. In order that, cutter chains of this kind may performwork uniformlyand efficiently, it is desirable that the cutter bits project from theouter ends of the sockets 6 a predetermined and, uniform distance, andit is the purpose of the present invention, primarily, to provide animproved. form of gauge for facilitating setting of these cutter bits sothat they will project for the desired distance.

The present gauge consists of a band or ring 9 adapted to be placed uponthe finger of one hand next to the index finger as illustrated by dottedlines in Figure 2, and a collocating gauging device carried by saidfinger ring or band 9 including members 10 and 11 adapted torespectively abut the outer end of the socket 6 and the outer end of thecutter bit 7 whereby the desired adjustment of the bit 7 is effectedwhen the latter is adjusted outwardly into engagement with the member'11. Naturally, when the bit 7 is so adjusted, the set screw 8 istightened for securing this adjustment, whereupon the 1 next cutter bitis adjusted by the same operation.

As shown, the collooating gauge device per secomprises an elongatedplate or bar constituting the member 10 and having the finger band 9integrally formed on the lower edge thereof intermediate the ends of thesame so that the bar 10 extends transversely of the band 9 and thefinger in a plane at right angles to the axis of the opening in thefingerband 9 as shown in Figure 3. The contact member 11 simply consistsof a right angular flange integral with one end of the In operation, theband 9 is placed upon the finger, as shown in Figure 2 and the innerfree end of the contact member or bar 10 is disposed in engagement withthe outer end of the bit socket 6 as shown. By forming the bar 10 ofproper predetermined length as is well known in the art, the flange orcontact member 11 will then be located the prescribed distance from theouter end of the socket 6 at which it is desired the cut- 7 ting end orpoint of the cuter bit to tenninate when properly adjusted. The setscrew 8 is then loosened and the cutter bit 7 is slid outwardly of thesocket 6 until the outer end or point of said cutter bit contacts theinner side or face of the contact flange 11, whereupon the set screw 8is a ain tightened and the cutter bit is effectively secured in properposition to project at the required distance from the tool or bitsocket.

From the above description it will be seen that the present deviceprovides a means which may be employed conveniently and without therequirement of especial skill for enabling the cutter bits of a cutterchain to be easily and expeditiously adjusted, to project the requiredpredetermined distance from the cutter bit sockets of the cutter chain,and with all of the cutter bits uni formly adjusted.

The objects and advantages of the present invention will be readilyapparent to those skilled in the art from the above description, and itis noted that minor changes may be made without departing from thespirit and scope of the invention as claimed.

- Vihat I claim as new is 1. A colloeating cutter bit gauge comprising afinger band, an elongated bar rigid with and extending across the band,and adapted to be placed with one end inengagement with the outer end ofthe cutter bit socket and a bit adjustinent-limiting contact membercarried by the other end of said bar, said bar being integrally joinedatone edge and intermediate its ends to one side of said finger band,said contact member embodying an integral lateral flange on said otherend of the bar, and a web integrally connecting the lower edge of saidflange with the adjacent side of said finger band.

2. A collocating cutter bit gauge comprising a linger band,' anelongated bar rigid with and extending across the band, and adapted tobe placed wit-hone end in engages ment with the outer end of thecutterbit socket and a bit adjustment-limiting contact member carried by theother end of said bar, said bar being integrally joined at one edge andintermediate its ends to one side of said finger band, said contactmember embodying an integral lateral flange on said other end of thebar, a web integrally connecting the lower edge of said flange with theadjacent side of said finger band, and the adjacent lower edge portionof said bar.

In testimony whereof I afiix my signature.

STEVE NEMETH

